https://community.extremenetworks.com/t5/extremeswitching-exos-switch/bfd-for-connected/m-p/21006#M1363 Hi Team ,<BR /> <BR /> I have a scenario as follows<BR /> <BR /> Switch (port 48) ---------------------------- (port2/8) router<BR /> There are multiple MUX between switch and router.<BR /> These MUX are not in my control.<BR /> <BR /> Config on switch is<BR /> ************************<BR /> configure vlan CPC_OM add ports 41-42, 48 tagged <BR /> configure vlan CPC_OM ipaddress 10.1.1.2 255.255.255.0<BR /> enable ipforwarding vlan CPC_OM<BR /> <BR /> Lets say IP on router end is 10.1.1.3<BR /> <BR /> 1) When i bring port 48 on switch down ; the port on router stays UP (expected as MUX link is UP and fine)<BR /> 2) As per my understanding ; BFD run on top of a 'client' protocol like static,bgp,ospf etc.<BR /> 3) Here the link is a "connected" link . Hence I am not sure if BFD can be of any help here . Can someone please comment ?<BR /> <BR /> My requirement is that when port on switch is brought down ; router should bring down interface and hence should delete 10.1.1.x route from its routing table.<BR /> <BR /> I know BFD has to be done on both sides ; I wanted confirmation from extreme end if there is a possible solution to this case .<BR /> <BR /> Thanks<BR /> Mon, 13 Jun 2016 15:46:00 GMT Gaurav_Madan 2016-06-13T15:46:00Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/bfd-for-connected/m-p/21006#M1363 Hi Team ,<BR /> <BR /> I have a scenario as follows<BR /> <BR /> Switch (port 48) ---------------------------- (port2/8) router<BR /> There are multiple MUX between switch and router.<BR /> These MUX are not in my control.<BR /> <BR /> Config on switch is<BR /> ************************<BR /> configure vlan CPC_OM add ports 41-42, 48 tagged <BR /> configure vlan CPC_OM ipaddress 10.1.1.2 255.255.255.0<BR /> enable ipforwarding vlan CPC_OM<BR /> <BR /> Lets say IP on router end is 10.1.1.3<BR /> <BR /> 1) When i bring port 48 on switch down ; the port on router stays UP (expected as MUX link is UP and fine)<BR /> 2) As per my understanding ; BFD run on top of a 'client' protocol like static,bgp,ospf etc.<BR /> 3) Here the link is a "connected" link . Hence I am not sure if BFD can be of any help here . Can someone please comment ?<BR /> <BR /> My requirement is that when port on switch is brought down ; router should bring down interface and hence should delete 10.1.1.x route from its routing table.<BR /> <BR /> I know BFD has to be done on both sides ; I wanted confirmation from extreme end if there is a possible solution to this case .<BR /> <BR /> Thanks<BR /> Mon, 13 Jun 2016 15:46:00 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/bfd-for-connected/m-p/21006#M1363 Gaurav_Madan 2016-06-13T15:46:00Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/bfd-for-connected/m-p/21007#M1364 Hi,<BR /> <BR /> BFD is used to check layer 3 (IP) connectivity. You can use it between layer 3 switches and routers, to bring down routing neighbors or next hops.<BR /> <BR /> You seem to be looking for a layer 2 mechanism. CFM would be a standardized method for this, if the router supports it.<BR /> <BR /> HTH,<BR /> Erik Mon, 13 Jun 2016 16:30:00 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/bfd-for-connected/m-p/21007#M1364 Erik_Auerswald 2016-06-13T16:30:00Z